US 12,761,752 B2Granted

Display device with different signal phase to different transmission electrodes

AssigneeSamsung Display Co., Ltd.

InventorsBo-Hwan Lee, Sanghun Park, Byeongkyu Jeon

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Abstract

A display device includes a display layer, and a sensor layer having a sensing region and a second sensing region. The sensor layer includes a plurality of first transmission electrodes and a plurality of second transmission electrodes, a first transmission signal having a first waveform and a second transmission signal having a second waveform are provided to the plurality of first transmission electrodes, a third transmission signal having the second waveform and a fourth transmission signal having the first waveform are provided to the plurality of second transmission electrodes, and the first to fourth transmission signals are provided concurrently.

Claims17

Dependent claims

A display device comprising:

a display layer;
and
a sensor layer on the display layer and having a sensing region including a first sensing region and a second sensing region adjacent to the first sensing region,
wherein the sensor layer comprises:
a plurality of first transmission electrodes, each extending in a first direction, spaced apart in a second direction crossing the first direction, and located in the first sensing region;
and
a plurality of second transmission electrodes, each extending in the first direction, spaced apart in the second direction, and located in the second sensing region,
a first one of the plurality of first transmission electrodes is configured to receive a first transmission signal having a first waveform in a first sensing frame and having a second waveform that is inverse in phase to the first waveform in a second sensing frame continuous with the first sensing frame,
a second one of the first transmission electrodes adjacent to the first one of the plurality of first transmission electrodes is configured to receive a second transmission signal having the second waveform that is inverse in phase to the first waveform in the first sensing frame and having the first waveform in the second sensing frame,
a third one of the first transmission electrodes adjacent to the second one of the plurality of first transmission electrodes is configured to receive a third transmission signal having the second waveform in the first sensing frame and having the second waveform in the second sensing frame,
a fourth one of the first transmission electrodes adjacent to the third one of the plurality of first transmission electrodes is configured to receive a fourth transmission signal having the second waveform in the first sensing frame and having the second waveform in the second sensing frame,
one of the plurality of second transmission electrodes is configured to receive a fifth transmission signal having the second waveform in the first sensing frame and having the first waveform in the second sensing frame,
another one adjacent to the one of the plurality of second transmission electrodes is configured to receive a sixth transmission signal having the first waveform in the first sensing frame and having the second waveform in the second sensing frame, and
the first to sixth transmission signals are provided concurrently.

11 more elements

A display device comprising:

a display layer;
and
a sensor layer on the display layer, having a sensing region including a first sensing region and a second sensing region adjacent to the first sensing region, and configured to work on a first sensing frame and a second sensing frame continuous with the first sensing frame,
wherein the sensor layer comprises:
a plurality of first transmission electrodes, each extending in a first direction, spaced apart in a second direction crossing the first direction, and located in the first sensing region;
and
a plurality of second transmission electrodes, each extending in the first direction, spaced apart in the second direction, and located in the second sensing region,
each of first transmission electrodes adjacent to each other among the plurality of first transmission electrodes is configured to receive a corresponding one of a plurality of first transmission signals,
each of second transmission electrodes adjacent to each other among the plurality of second transmission electrodes is configured to receive a corresponding one of a plurality of second transmission signals,
one of the plurality of first transmission signals has a first waveform during the first sensing frame and at least three of remaining ones of the plurality of first transmission signals have a second waveform different from the first waveform during the first sensing frame,
one of the plurality of second transmission signals has the second waveform during the first sensing frame and at least three of remaining ones of the plurality of second transmission signals have the first waveform during the first sensing frame,
another one adjacent to the one of the plurality of first transmission signals has the first waveform during the second sensing frame and has the second waveform during the first sensing frame and at least three of remaining ones including the one of the plurality of first transmission signals have the second waveform during the second sensing frame,
another one adjacent to the one of the plurality of second transmission signals has the second waveform during the second sensing frame and has the first waveform during the first sensing frame and at least three of remaining ones including the one of the plurality of second transmission signals have the first waveform during the second sensing frame.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/825,670Filed 5 Sep 2024
Priority: KR 10-2023-012643721 Sep 2023
Published: US 2025/0103159 A127 Mar 2025
Granted: 13 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 3/04166
Control or interface arrangements specially adapted for digitisers: details of scanning methods, e.g. sampling time, grouping of sub areas or time…
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G06F 3/0416
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: control or interface arrangements specially adapted for…
G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Family

US 2025/0103159 A1Pre-grant publication · published 27 Mar 2025
US 12,761,752 B2This patent

From the US filing history. Foreign family members aren’t listed.

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